VSC8658 datasheet(72/95 Pages) MICROSEMI

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Electrical Specifications

VMDS-10242 VSC8658 Datasheet Revision 4.1

6.1.7

LED Pins

In addition to any parameter-specific conditions, the specifications listed in the following table may be

considered valid only when:

•VDDIO is 3.30 V

•VDD33 is 3.30 V

•VDD12 is 1.20 V

•VDD12A is 1.20 V

6.1.8

JTAG Pins

In addition to any parameter-specific conditions, the specifications listed in the following table may be

considered valid only when:

•VDDIO is 3.30 V

•VDD33 is 3.30 V

•VDD12 is 1.20 V

•VDD12A is 1.20 V

Input common mode

voltage

VICM

0.4

1.3

VDD12A = 1.20 V.

Total receive jitter

tolerance

JRXTotal 450

550

Measured peak-to-peak.

1000BASE-X mode.

JRXTotal 5870

6500

Measured peak-to-peak.

100BASE-FX mode.

Table 68 •

DC Characteristics for LED[3:0]_n Pins

Parameter

Symbol Minimum

Maximum

Unit Condition

Output high voltage

VOH

2.4

3.6

IOH = –4.0 mA

Output low voltage

VOL

00.5

IOL = 4.0 mA

Output leakage current

IOLEAK

–10

µA

Output low current drive strength

IOL

8.0

Output high current drive strength

IOH

–8.0

Table 69 •

DC Characteristics for JTAG Pins

Parameter

Symbol Minimum

Maximum

Unit

Condition

Output high voltage

VOH

2.4

3.6

IOH = –1.5 mA

Output low voltage

VOL

00.5

IOL = 1.5 mA

Input high voltage

VIH

2.1

3.6

Input low voltage

VIL

–0.3

0.9

Input leakage current

IILEAK

–42

µA

Internal resistor included

Output leakage current

IOLEAK

–42

µA

Internal resistor included

Output low current drive

strength

IOL

8mA

Output high current

drive strength

IOH

–8

Table 67 •

DC Characteristics for MAC_TDP/N_n and SER_DIP/N_n Pins (continued)

Parameter

Symbol Minimum

Maximum

Unit

Condition

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